* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    font-size: 16px;
    line-height: 24px;
    color: #000000;
    background-color: #f1f2f3;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(241, 242, 243, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 16px 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-text {
    font-size: 24px;
    font-weight: 600;
    color: #000000;
    text-decoration: none;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-link {
    color: #000000;
    text-decoration: none;
    font-size: 14px;
    font-weight: 400;
    transition: color 0.2s ease;
}

.nav-link:hover {
    color: #0000ee;
}

.btn-primary {
    background-color: #caf639;
    color: #0000ee;
    padding: 16px 24px;
    border-radius: 95px;
    text-decoration: none;
    font-size: 12px;
    font-weight: 400;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
    display: inline-block;
}

.btn-primary:hover {
    background-color: #b8e632;
    transform: translateY(-1px);
}

main {
    margin-top: 80px;
}

.hero-section {
    padding: 120px 0 80px;
    text-align: center;
}

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 24px;
    padding: 8px 16px;
    margin-bottom: 32px;
    font-size: 14px;
    color: #000000;
}

.hero-title {
    font-size: 80px;
    font-weight: 400;
    line-height: 80px;
    color: #000000;
    margin-bottom: 24px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-subtitle {
    font-size: 18px;
    line-height: 28px;
    color: #666666;
    max-width: 600px;
    margin: 0 auto;
}

.gradient-section {
    padding: 80px 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

.gradient-container {
    position: relative;
    width: 100%;
    max-width: 800px;
    height: 400px;
    border-radius: 24px;
    overflow: hidden;
}

.gradient-bg {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #ff6b6b 0%, #4ecdc4 25%, #45b7d1 50%, #96ceb4 75%, #ffeaa7 100%);
    position: relative;
}

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background-color: #caf639;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #0000ee;
    cursor: pointer;
    transition: all 0.3s ease;
}

.play-button:hover {
    transform: translate(-50%, -50%) scale(1.1);
}

.api-section {
    padding: 80px 0;
    text-align: center;
}

.section-title {
    font-size: 48px;
    font-weight: 400;
    line-height: 56px;
    color: #000000;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 18px;
    line-height: 28px;
    color: #666666;
    max-width: 600px;
    margin: 0 auto;
}

.intro-section {
    padding: 80px 0;
    background: rgba(255, 255, 255, 0.5);
}

.intro-title {
    font-size: 36px;
    font-weight: 500;
    line-height: 44px;
    color: #000000;
    margin-bottom: 24px;
    text-align: center;
}

.intro-text {
    font-size: 18px;
    line-height: 28px;
    color: #666666;
    margin-bottom: 48px;
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.feature-item {
    text-align: center;
    padding: 32px 24px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 16px;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.feature-item h3 {
    font-size: 20px;
    font-weight: 500;
    color: #000000;
    margin-bottom: 12px;
}

.feature-item p {
    font-size: 16px;
    line-height: 24px;
    color: #666666;
}

.use-cases-section {
    padding: 80px 0;
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-top: 48px;
}

.use-case-card {
    position: relative;
    height: 280px;
    border-radius: 16px;
    overflow: hidden;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.use-case-card:hover {
    transform: translateY(-4px);
}

.card-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-size: cover;
    background-position: center;
}

.card-bg-1 { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }
.card-bg-2 { background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%); }
.card-bg-3 { background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%); }
.card-bg-4 { background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%); }
.card-bg-5 { background: linear-gradient(135deg, #fa709a 0%, #fee140 100%); }
.card-bg-6 { background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%); }
.card-bg-7 { background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%); }
.card-bg-8 { background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%); }

.card-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 24px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
}

.card-label {
    font-size: 12px;
    font-weight: 500;
    opacity: 0.8;
    display: block;
    margin-bottom: 8px;
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.card-description {
    font-size: 14px;
    line-height: 20px;
    opacity: 0.9;
}

.footer {
    background-color: #000000;
    color: #ffffff;
    padding: 64px 0 32px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 48px;
    margin-bottom: 48px;
}

.footer-section h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}

.footer-section ul {
    list-style: none;
}

.footer-section li {
    margin-bottom: 8px;
}

.footer-section a {
    color: #cccccc;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s ease;
}

.footer-section a:hover {
    color: #caf639;
}

.footer-bottom {
    border-top: 1px solid #333333;
    padding-top: 24px;
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    color: #cccccc;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 48px;
        line-height: 52px;
    }
    
    .section-title {
        font-size: 32px;
        line-height: 40px;
    }
    
    .use-cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .nav-links {
        gap: 16px;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .use-cases-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: 36px;
        line-height: 40px;
    }
}

.form-container {
    max-width: 600px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.8);
    padding: 48px;
    border-radius: 16px;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #000000;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 16px;
    border: 1px solid rgba(0, 0, 0, 0.2);
    border-radius: 8px;
    font-size: 16px;
    font-family: inherit;
    background: rgba(255, 255, 255, 0.9);
    transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: #caf639;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
    margin-top: 48px;
}

.pricing-card {
    background: rgba(255, 255, 255, 0.8);
    border-radius: 16px;
    padding: 48px 32px;
    text-align: center;
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
    transition: transform 0.3s ease;
}

.pricing-card:hover {
    transform: translateY(-4px);
}

.pricing-card.featured {
    border: 2px solid #caf639;
    transform: scale(1.05);
}

.pricing-card.featured::before {
    content: "Most popular";
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: #caf639;
    color: #0000ee;
    padding: 8px 24px;
    border-radius: 24px;
    font-size: 12px;
    font-weight: 500;
}

.pricing-title {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 8px;
    color: #000000;
}

.pricing-subtitle {
    font-size: 14px;
    color: #666666;
    margin-bottom: 32px;
}

.pricing-price {
    font-size: 48px;
    font-weight: 700;
    color: #000000;
    margin-bottom: 8px;
}

.pricing-period {
    font-size: 14px;
    color: #666666;
    margin-bottom: 32px;
}

.pricing-features {
    list-style: none;
    margin-bottom: 32px;
}

.pricing-features li {
    padding: 8px 0;
    font-size: 14px;
    color: #000000;
    display: flex;
    align-items: center;
    gap: 8px;
}

.pricing-features li::before {
    content: "✓";
    color: #caf639;
    font-weight: bold;
}

.pricing-features li.disabled {
    color: #cccccc;
}

.pricing-features li.disabled::before {
    content: "✗";
    color: #cccccc;
}

.success-message {
    background: #caf639;
    color: #0000ee;
    padding: 16px 24px;
    border-radius: 8px;
    margin-bottom: 24px;
    text-align: center;
    font-weight: 500;
}

.content-section {
    padding: 80px 0;
    background: rgba(255, 255, 255, 0.5);
}

.content-section h2 {
    font-size: 24px;
    font-weight: 600;
    color: #000000;
    margin: 32px 0 16px 0;
}

.content-section h2:first-child {
    margin-top: 0;
}

.content-section p {
    font-size: 16px;
    line-height: 24px;
    color: #333333;
    margin-bottom: 16px;
}